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    Question

    40% of 1820 + 80% of 630 = 90% of 1280 +

    ? What value should come in place of the question-mark(?) in the following questions:
    A 80 Correct Answer Incorrect Answer
    B 60 Correct Answer Incorrect Answer
    C 120 Correct Answer Incorrect Answer
    D 50 Correct Answer Incorrect Answer
    E 110 Correct Answer Incorrect Answer

    Solution

    40% of 1820 + 80% of 630 = 90% of 1280 + ? 728 + 504 =  1152 + ? ? = 80

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